My wife has a C320 CDI. This car 4 miles a day mon to fri. I give it a good Italian tune up at the weekend. It's run fine for 30k with no issues apart from glow plugs and relay.
Keep the CLS , it's unique and dam awesome compared to the other rubbish on the road.
+ 1 for keeping the CLS they are lovely cars and look stunning.. are you sure you particular car HAS a DPF? I my old CLS didn't ..you can tell if it has have a look at the tailpipes and if they are blackened then no DPF is fitted if they are clean and shiny then you have a DPF.
As others have said as long as you do a 20ml run say every 1000mls then you wont have any problems.
+ 1 for keeping the CLS they are lovely cars and look stunning.. are you sure you particular car HAS a DPF? I my old CLS didn't ..you can tell if it has have a look at the tailpipes and if they are blackened then no DPF is fitted if they are clean and shiny then you have a DPF. As others have said as long as you do a 20ml run say every 1000mls then you wont have any problems. Good Luck with it Alfie